50 MEMOIRS ON THE COLEOPTERA 



Nebria mobilis n. sp. Much more slender than the preceding, de- 

 pressed, shining, piceous-black, the elytra brilliant and polished metallic 

 green, which changes to violet under very oblique illumination; under 

 surface and legs blackish-piceous; antennae slender, two-thirds as long 

 as the body, unicolorous throughout and dark testaceous; head smooth, 

 nearly as in the preceding but with rather more evident anterior im- 

 pressions, much narrower than the prothorax, the latter about two-fifths 

 wider than long, the sides broadly and rather feebly rounded, strongly 

 converging posteriorly and becoming straight and parallel for some dis- 

 tance before the angles, which are right and sharp; sides rather broadly 

 and strongly impressed, the transverse impressions broad and feeble, barely 

 at all punctured, the lateral basal nearly as in catenata, the median line 

 well impressed; elytra elongate-oval, only a little wider near apical third, 

 the sides broadly rounding, feebly converging thence to the broadly 

 rounded and feeble humeri, about a third wider than the prothorax; 

 striae fine, feebly impressed, finely but evidently punctured, the intervals 

 broadly and very moderately convex, the third and seventh interrupted 

 by three or four moderate fovese, the fifth apparently never foveate; 

 legs long and slender. Length 11.5-13.3 mm.; width 4.4-4.6 mm. 

 Colorado Levette collection. Three examples. 



More slender, depressed and more feebly sculptured than the 

 preceding and with different coloration. It agrees very well with 

 the description of gregaria, given by Horn and based upon an 

 Alaskan individual, except that the strise are punctured and not 

 devoid of punctures as stated of gregaria, and with the seventh 

 interval foveate as well as the third the only one described as being 

 foveate in gregaria. From purpurata Lee., it differs in its polished 

 elytra, which are said to be without metallic gloss in that species, 

 in having the head distinctly narrower than the prothorax, though 

 less markedly so than in catenata, in its shallow and not deep pro- 

 notal impressions and in having only the third and seventh, and not 

 the third, fifth and seventh, intervals interrupted by foveae. 



Nebria cuneata n. sp. Black or slightly piceous, the legs and antennae 

 rufo-piceous throughout, the elytra feebly rufescent apically, slender, 

 rather depressed, strongly shining; head smooth, much narrower than 

 the prothorax, the anterior impressions feeble; prothorax two-fifths (cf) 

 to one-half ( 9 ) wider than long, the sides rounded anteriorly, converging 

 and sinuate posteriorly, becoming parallel before the angles, which are 

 right or slightly everted and sharp; surface rather broadly concave and 

 feebly punctulate at the sides to the elevated bead, the anterior im- 

 pre3sion almost obsolete, the posterior broad but rather deep, punctulate, 

 the lateral impressions rather deep and adjacent to the angles; median 

 line well impressed; elytra fully twice as long as wide, oval, widest at 

 about three-fifths, the sides broadly arcuate and moderately converging 

 to the broadly rounded and feeble humeri; striae fine but rather deeply 



